Question: 1. Find the work done on a 40 lb suitcase when it is raised 9 inches.
2. Find the work done on a 20 kg suitcase when it is raised 30 centimeters.
3. A particle x feet from the origin has a force of x2 + 2x pounds acting on it. What is the work done in moving the object from the origin a distance of 1 foot?